Manufacture of horseshoe-blanks, &amp;c., from ductile metal.



Patented Nov. Il7 |902.

c. non'. MANUFACTURE 0F HOBSESHGE BLANKS, &c., FROM DUCTILE METAL.

(Applicatioxg filed Jan. 8, 1902.)

2 Sheets-Sheet I.

(No Model.)

' WITNESSES No. 713,259. Patented Nov. Il, 1902.

` c. HoLT. IANUFACTURE 0F HBSESHUE BLANKS, &c., FRDM DUCTILE METAL.

(Application led Jan. 8, 1902.4)

l(No Model.)

2 Sheets-Sheet 2.

. z s n 1, 7 af rn 2., lWn. 0

#4f/#gigi l i UNITED I STATES` ATENT OFFICE.

CHARLES HOL'I, OF PHILADELPHIA, PENNSYLVANIA, ASSIGN OR TO BRADLEYPATENT HORSE SHOE COMPANY, INCORPORATED, A CORPORATION OF DELAWARE.

MANUFACTURE"OFHORSESHOE-BLANKS, do., FROM DUCTILE METAL.

SPECIFICATION forming part of Letters Patent No. 713,219, dated November11, 1902.

Application fned'ianmy 8,1902. sermino. 88,941. (No moda.)

release and delivery of them as quickly asV I formed; and to this-end itconsists in a series of segmentally-shaped dies formed in or attached toa roller and a seriesof rods and means of operating the same to expelthe articles from the dies and a stripperto remove 2o them.

The following is a full description of the constructionY and operationof themachine,`

reference being had to the accompanying drawings, in whichthereof; Fig.2, a side View thereof; Fig. 3, a vertical section of the rolls and diesin the plane of the axes ofthe rolls; Fig. 4, a section of the rolls anddies in the plane indi- 3o cated by the dotted line a: in Fig. 1. Fig.

5 shows one of the plungers or rods for discharging the blanks. Fig. 6shows a plate for operating the plungers. Fig. 7 shows a lever foroperating the plate. Fig. 8 shows a guideand fulcrum for the plate andlever shown in Figs. 6 and 7, and Fig. 9 is a blank formed by themachine.

Referring to the drawings, 1and2are housings supporting the rolls 3 and4 by their 4o necks 5 and 6 in boxes 7 and 8. The rolls are pressedAtoward each other by screws 9 and 10, bearing down on the upper boxes7. The upper roll 3 is formed of a body or strong y flange ll, withsegmentally-shaped dies l2,

secured to the side of it by bolts 13 and nuts 14 and resting orabutting against projecting shoulders 15 on the iiange 1l. In the diesare formed cavities 16, corresponding with the shape of the blanks 17 tobe formed. The

Figure 1 shows a front view or elevation blank shown in Fig. 9 is a bar18, having a series of calks 19 formed on its face, with interyenngiillets 19 and nail-holes 20,and is for the purpose of manufacture intohorseshoes, such as are shown in G. W. and W. H. Bradleys application,Serial No. 18,784, filed June 1, 1900, and patented to them in a designpatent for fourteen years, No. 35,002, dated August 27, 1901. The lowerroll 4 is formed with a surface corresponding with the Opposite side ofthe blank and so as to enter slightlyinto oppositedies12,which areslightly deeper than the thickness of the blanks 17. Through the bottomof cavities in the dies 12 are made a series of parallel holes 2l,extending' from points 19" or the deepest parts of the cavity to theback or opposite side of the die. In each of the holes 2l is iitted arod or plunger 22, having a head 23 upon the inner end against which ahelical spring 24 rests and holds the end of the plunger 22 level withthe bottom of the cavity at the points 19" in the die. against the innersides of theheads 23 of the plungers 22 in each die, and a lever 27,pivoted to the guide 26, forces the plate 25 againstthe plungers 22, soas to expel the blank from the cavity of the die when the lever 27contacts with and passes under rollers 29, turning upon arbors 30,secured firmly to the housing 2. The rollers 29 are so located as tomeet the levers 27 after the dies have passed the opposite roll andopened, so the discharge of the blank commences after the die is openand the blank free from the pressure of the roll 2. A stripper 31 issecured to the housing 2, with its edge 32 presented to the dies, so asto let theblanks 17 as they are pushed outward from the dies 12 passunder the stripper 3l, aud thus prevent any of the blanks remaining inthe die and obstructing the entrance of metal in the next revolution ofthe dies. The ends of the blanks 17 are severed from each other by acutting edge 33 on the lower roll, so located as to enter the metal atthe end of each die.

By introducing a heated bar of steel or iron between the rolls 3 and 4when in rotation the A plate 25, held by guides 26, rests y metal isforced into the cavities of the dies and assumes the shape of a blank17, and as soon as the dies have opened the rods or plungers 22 expelthe blanks sufciently to enable the stripper 3l to enforce a completedelivery of the blanks from the machine, and the operation proceeds withsuch celerity that the blanks are sufficiently hot to immediatelythereafter be bent into the desired curved form for completedhorseshoes.

By causing the opposed roll to enter the dies lateral fins or beards ofmetal are avoided and any excess of metal projects upwardly from thesurface of the blank, from which it is readily removed by grindingWithout risk of impairing the profile of the blank.

